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I stopped by the bank the other day and ran to the ATM. When I went to get back in the 2014 Enclave it wouldn't crank. The display read "Service Securty System Needed". WTF??? I just bought this thing less than two weeks ago. I tried unlocking a re-locking the doors with the FOB. Tried manually locking the doors and unlocking. Made sure all the doors and lift gate were closed completely. I finally went online on my phone and found a way to reset it, open the driver door, hold the lock button down until it locks, close the door, unlock with the FOB and wait 10 seconds.
It worked but I'm worried theirs a bigger problem that caused this. I've done a search and cannot find any other mentions of this. I'm curious if anyone has had this happen or has any ideas?

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UPDATE: For anyone who's read this post. After getting stranded at a friends house Friday night for over two hours, Saturday morning I called the dealership where I purchased the vehicle. I explained that I understand I bought a used vehicle AS-IS with only a powertrain warranty. I also explained that I've had the Enclave less than a month and I can't afford to start paying electrical repairs. They agreed to have me drop the car off Tuesday and give me a loaner while it is fixed at no charge.
So far I am very pleased with Rick Hendrick!

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I picked up my Enclave Saturday. The only thing they found was a broke wire under the seat which typically controls the airbag. After they repaired that they said they couldn't get it to repeat the problem. Hopefully that had something to do with the security system and now it's fixed.

2011 with approx 122K (kilometers). Its been a pretty cold winter so far, with mornings starting off at almost -20C. Wife said the Enclave was somewhat difficult to start, and actually didn't start once or twice while attempting to crank. Figured it was the battery.... so we picked up a new...

Hey, guys. My '14 Enclave has been relatively trouble-free since new. It's spent its entire life in Houston, TX, and the odometer now sits at 54K. Twice during the past week, the A/C failed to come on after starting the engine - once when cold, once when warm. All the A/C control lights were...

Hello, I would like to change, or add a 7 pin trailer plug and brake controller on my 2010 Enclave. I am trying to google it, so far all I see is 4 pin. I have a 20' flat deck trailer for my ATV's, and would like to pull that.
Any suggestions would be appreciated....